| Duisburg to Orzesze | 530.41 mi (853.62 km) |
| Duisburg to Osowa | 528.83 mi (851.07 km) |
| Duisburg to Ostroda | 575.24 mi (925.76 km) |
| Duisburg to Ostroleka | 635.08 mi (1,022.07 km) |
| Duisburg to Ostrow Mazowiecka | 647.88 mi (1,042.66 km) |
| Duisburg to Ostrow Wielkopolski | 474.78 mi (764.09 km) |
| Duisburg to Ostrowiec Swietokrzyski | 633.83 mi (1,020.04 km) |
| Duisburg to Ostrzeszow | 480.79 mi (773.76 km) |
| Duisburg to Oswiecim | 552.58 mi (889.29 km) |
| Duisburg to Otwock | 620.81 mi (999.10 km) |
| Duisburg to Ozarow Mazowiecki | 600.93 mi (967.10 km) |
| Duisburg to Ozimek | 499.57 mi (803.98 km) |
| Duisburg to Ozorkow | 536.76 mi (863.82 km) |
| Duisburg to Pabianice | 541.87 mi (872.05 km) |
| Duisburg to Parczew | 690.88 mi (1,111.87 km) |
